Oil and steam burner nozzle



April ,7, 1,931'. R. H. FORNEY v I 1,799,551

l Patentlecal Apr. 7, 1931 in diameter,

ROSS H. FORNEY, OF DALLAS, TEXAS, ASSIGNOR TO FORNEY COMBUSTION ENGINEER- ING COMPANY, OF DALLAS, TEXAS, A CORPORATION OF TEXAS y OIL AND STEAM BURNER NOZZLE I Application led April 1,

relates to new and useful and steam burner improved means for bringing about 'a morel efficient atomization of the oil by the steam. A further object of theinvention is to pro'- vide a nozzle whereby the oil and steam willl be atomized in a conical spray so asto produce a wide spread conical flame.

Another object of the invention is to di's' charge the oil in a` continuous annular path directly into a projected cone of steam, whereby a more thorough and even distribution and c'ommingling is carried out.

A still further object of the invention Iis to provide a nozzle in which all the parts may e readily disconnected for cleaning and inspection.

A construction designed to carry vout the invention will be hereinafter described, together with other features of the invention.

threads for receiving the forward end of the oil tube 11. The adapter issnot only rigidly mounted in the forward ends of the steam and oil tubes, but serves -to hold them securely in their relative positions,

The adapter also has an axial bore 16 which is internally screw-threaded for receiving the stem 17Aof a nozzle head 18. The-stemvhas a cent-ral duct 19 communicating through a reduced orifice 2O with intersecting radial ports 21 located in an annular collar 22 which forms a shoulder for the stem.

The adapter 12 has an enlarged vcollar 23 projecting beyond the tube 10 and-provided f at its fro t edge with' opposite annular bevels' A frusto-conical the stem against 24 and 25, respectively.

spreader 26 is confined on the adapter by the collar 22 and extends from the collar 23. The inner beyel 24 concentrically vsurroundsdthefsprea/der and is spaced slightlytherefrom to provide a forwardly flaring annular slotr27 therebetween, through which/.the/Steam 1s discharged in a conical The invention will be more readily under--/ P y stood from a reading of the following specification., and by reference tov the accompanyan' example of the invention is shown, and wherein z' Fig. 1 is a longitudinal sectional view of a nozzle constructed in accordance with the invention, l v Fig. 2 is atransverse sectional view vtaken on the line 2-2 of Fig. 1, i

Fig. 3 is asimilar view 3-3 of Fig. 1, and

Fig. 4 is' a transverse sectional v iew taken on the line 4 4 of Fig..1. 7

In the drawings the numeral 10 designates taken on the line a steam tube to which steam or other presv air is suitably surel Huid such as compressed supplied. An oil'or fuel tube 11, much less is concentrically mounted'in the steam tube and is suitably supplied with oil or the like.

A11 adapter 12 is formed with a shoulder d has an annular beveled face 30 tube -10 and provided with internal screw4 s ra The adapter has longitudinal steam ducts or passages 28 receiving steam from the tube 10and dischargingv it `as to impinge the outer surface ofthe conical spreader 26.y The steam is discharged t rough thenarrow annular slot 27 in a thin flaring or conical spray. bevel 25 provides a cut back surface which gives clearance to the steam spray. The spreader 26 overhangs the ports 21 and oil fromthe tube 11 is conducted through the shank 15, duct19 to the' orifice 20. The refduced orifice' regulates Athe quantity of oil delivered to the ports 21. The oil discharged from the ports strikes the inner conical surface of the spreader ahd is deflected into the' annular sump'29 which surrounds 22 in the head I8, whereby the oil is spread and distributed. v

The head is of greater diameter lthan the adaptercollar 23 and the spreader 26 and the outer surface of the spreader'and of the same pitch. The forward edge of er is spaced sufficiently from the head to form a narrow annular slot 31l and the oil spre The outer annular.

flush with within the collar 23 so the collar l' the spread- 'into the sump 29 is discharged through this slot into the path of the steam spray.v Tov reduce the vradial width ofthe slot 31 the spreader is provided with an inner annular bevel 32.

It will be seen that the oil is discharged substantially transversely of the path of the steam andtherefore will be atomized by the latter. The forward flare of the spreader and the face 30 of the head will cause the steam atomized oil spray to spread in a widely ampliliediconical form which is highly desirable for boiler furnaces.

Further'the oil and steam will be thoroughly commingled and a highly combustible fuel will be delivered by the nozzle. The slots 27 and 3l are very narrow and are restricted to the discharge of thin annular sheets of steam and oil. It is obvious that by removing the head 18 and stem.17 the spreader 26 may be taken out and the nozzle easily cleaned.

Various changes in the size and shape of the different parts, as well as modifications and alterations,'may be made 'within the scope of the 'appended claims. l

What I claim, is: y 1. In a combined fuel nozzle, a steam tube, a fuel tube extending longitudinally within the steam tube, a circular member at the outer end of the steam tube, a conical spreader within the circular member providing an annular steam discharge opening therebetween, and a head haying a fuel passage connected with the fuel tube and an annular outer por- YItionbevelledand iiush with the outer surface of the spreader, the`o`uter end of 111e spreader being spaced from the head to providerarestricted annular discharge opening for the fuel fluid.

2. In a combined fuel nozzle, a steam tube, a fuel tube extending longitudinally withinv the steam tube, an adapter connected to the end of the steam tube and having a flared steam outlet, a head having a reduced shank mounted in the `adapterand provided with fuel passages connected with the fuel tube, and a conical spreader ittingin the flareddischarge opening of the adapter, the head overhanging the spreader and providing therewith an annular fuel discharge slot, the head having undercut surfaces for deflecting the fuel from the passage to said slot.

3. A fuel nozzle as set forth in claim 2, in

- 5.5i which the adapter is provided with longitudinal steam ducts between the steam tube and the fiared discharge opening, and also in which the head has a bevelled outersurface contiguous to and flush with the outer surface of the spreader and extending outwardly of the'fuel discharge opening.

` 4. *In a combined fuel nozzle, a tubular pressure Huid conductor, a fuel conductor extending longitudinally lwithin thev pressure 05 fluid conductor, an adapter connected to the end of the pressure fluid conductor and exe tending axially thereof, ahead disposed concentrically of the-adapter andthe fuel con--v ing with the adapter and head constructed for atomizing the pressure iuid forwardly in an-` inverted cone for-In and involvingthe fuel fluid atits .point of ejection vfrom the head;

In testimony whereof I affix my signature.

ROSAS H. FORNEY. 

